Not support ARC

[magicfuture]

Seem there have many code need to modify for iOS 7 ARC. Isn't it? (Sorry if i were wrong)

[JamesBucanek]

Using ARC is optional. Older applications that don’t use ARC are not required to be modified to run on iOS 7.

An application can use ARC (where the compiler decides where the -retain and -release messages should be sent) or it can use traditional reference counting (where the programmer decides where the -retain and -release messages should be sent). Both use the same underlaying memory management services, and both are supported on iOS 7.